Burglar or fire alarm system.



PATBNTED FEB. 28, 1905.

-J. W. GULP.

BURGLAR 0R PIRE ALARM SYSTEM.

APPLIATION FILED TUNE 25,1904.

Alfo'rney manwli SSS S..

Lillina "i83,996.

Patented February 28, 1905,

PATENT Tirion..

IUI-'IN W. CULI), OF ELKHART, INDIANA, ASSIGNOR TO MODERN'BUlii-lIn/-ilt & FIRE ALARM CUMIANY, OF lilLKI-IART, INDIANA. l

BUWGLAW OH FIRE ALAFiIVl SYSTEM.

SPECIFICATION forming part of Letters Patent No. 783,996, dated February28, 1905.

Application filed June 25,1904. Serial No. 214,197.

.To f/,ZZ when?, if; T11/my concern:

Be it known that I, J onN W'. CULP, a citizen of the United States, anda resident oi' Elkhart, in the county oi Elkhart and State oi Indiana,have made a certain new and useful Invention in Burglar or Fire AlarmSystems; and I declare the following to be a Full, clear, and exactdescription oi' the same, such as will enable others skilled in the artto which it ap- IO pertains to make and use the invention, relerencebeing' had to the accompanying' drawing, and to letters or figures oi'reference marked thereon, which form a part of this speciiication. Thefigure is a vertical longitudinal sectional I5 View illustrating' theinvention.

The invention relates to means for giving notice in case of iire orburglary in 4buil-dings; and it consists in the novel construction andcombinations ot' parts, as hereinafter set forth.

2O In the accompanying' drawing, illustrating the invention, the lettera designates an outer metallic case which is designed to be attached tothe outer wall of the building' to be protected. This case is providedwith a tubular extension (I, which projects from the rear of the caseinto the building. .It is also provided with a drop-door .whereby accesscan be had to the interior, such door having a suitable lock. as at c.To the door is connected near its hinged portion an inside i'lat springdevice a', which is designed when the door is opened to come in contactwith the inside case e and deenergize the magnet M, thereby setting'oli'A the alarm in the inner ease.

This provision is made to guard against tampering with the lock. Thedoor is designed to be provided with a strong wire-netting at Within theouter case is located the inner case c', which is oi' similar form tothe outer 40 case, but a little smaller, so that it will .have aninterval around it between its wall and that ot the outer case.insulating-strips f are placed between the inner and outer cases. Theinner ease is also provided with 'a tubular extension projecting in rearwithin the tubular extension of the outer case and insulated therefrom.The inner case is 'designed to contain the alarm and signal devices andwhen placed within the outer case is entirely insulated therefrom andfrom its tubular extension, except in so Vtar as the coliductingwireshereinafter described are concerned. The alarm-bell is indicated at aand its electromagnet at y.) within the inner case, which also containsthe red light f] ol incamleseent characteigthe wires Poi' which extendth rough the tubular extension to the source ol. electric-light current.The wires (i and 8 oil the alarm-circuit also extend through the tubularprojections olvl the cases into the buildings. 6o

rI `lie'ii1si .le of the building is4 wired in connection with thewindows and doors, as at 5, and there is also provided alongI the wallsol. the building a system et' 'fusible wiring, as at l0. This wiring isdesigned to melt apart at a low degree oi'l heat to ent out theelectromagnet N. Y

M denotes an electromagnet which is normally in circuit, thus holdingits armatureswitch V out oig engagement with contactpoint l/V.

N is an electronnignet normally energized by battery J and holdingIarmature-switch Iv out of touch with contact-point U.

The electric-light wiringl l.J is provided with 7 5' a break near themagnet N and a pivoted switch Q, which is held out ot contact with theother terminal et' said break by the armature-switch l. when in circuit,said switch having an insulated. arln it, serving as a rest or 8O catch.In this manner it designed to cut out the electric-light current b v theenergization ot' the magnet N, which is normally in circuit. Theswitch-armature V oiAl magnet M is connected by wire 7 to battery' K. 85

l/V denotes a Contact in connection with the alarm-wire 6, and when thearmature-switch V falls through any short-eircuiting or breaking ot thenormally closed circuit in the inagnet M the current will pass' throughthe wires 90 (i, 7, and 8 andv battery K, soundingI the alarm.

The wire 2 leads Jfrom one side Oi' battery JA, forming circuit with theinside tubing' and case and extending by wire 3 to one side ot' magnetM. The other wire, 4, from battery J forms circuit with the outsidetubing and case, which is connected with wire 5, which extends tosuitable connections upon doors and windows and continues to the otherside of magnet M. The fusible metal wiring 10 extends from battery Jthrough such parts of the building as are liable to outbreaks of lireand is fully connected with one side of magnet N. The other wire, 11,from battery J is also in connection with magnet N, which is normally inclosed circuit. Wires 12 and 14 are connected with wiring 5 and providedwith switch 13, which may be closed when it is desired to cut out thewiring system to the doors and windows without denergizing magnet M. Thecontact part U is connected to the wire L of battery J by wire 16, andthe armature-switch I is connected by wire 17 to the wire Q of the samebattery.

Then the door or window connection is broken, magnet M will bedenergized and its switch-armature will fall, engaging contact W' andputting the alarm-circuit in action for battery K. Should the fusiblewiring melt at any point, the magnet N will become deenerg'ized and itsswitch-armature l will drop and close circuit in contact U, denergizingmagnet M and allowing the switch-armature Vto drop and closing thebell-circuit. At the same time the switch Q will be released and willclose the electric-light circuit. ln the case of burglary when thecircuit of the wiring' of the windows and doors is broken the bell-alarmwill ring; but when tire occurs, short-circuiting' the fusible-wiresystem, both the alarm-circuit and the light-circuit will be put inaction.

Having described the invention, what l claim, and desire to secure byLetters Patent, 1s4

1. The electric alarm, consisting of the outer case, and its tubularextension, forming a part ol. a protection-circuit normally closed on anelectromagnet, and including an inner case, and its inner tubularextension, insulated from said outer case and its tubular extension, andcontaining an alarm device having an electromagnet in a normally opencircuit, the armature of the electric magnet in the normally closedcircuit moving to close the normally open circuit upon the denergizationof its magnet, substantially as specified.

2. The electric alarm, consisting of the outer case, forming' a part ofa burglar-protection circuit normally closed on an electromagnet, andincluding' aninner case, insulated from said outer case, and containing'an alarm device, having an electromagnet in a normally open circuit, thearmature of the electric magnet in the normally closed circuit moving toclose the normally open circuit upon the deenergization of its magnet,anelectric light in a normally open circuit having a switch in insulatedengagement with a second switch-armature, a second normally closedcircuit, an electromagnet energized thereby to normally hold said secondswitch-armature open and a fusible wire in said second closed circuit,substantially as specified.

ln testimony whereotI l aiiiX mysignature in presence of two witnesses.

JOHN W CULP.

Witnesses:

A. Gr. GEDNEY, EMoRY H. BoGLEY.

